Classification
320 - Political science
330 - Economics
363 - Other social problems & services
333 - Economics of land & energy
171
700 - The arts; fine & decorative arts
73
600 - Technology
64
000 - Computer science, information & general works
59
551 - Geology, hydrology & meteorology
59
610 - Medicine & health
55
380 - Commerce, communications & transportation
52
140 - Specific philosophical schools
43
630 - Agriculture & related technologies
36
370 - Education
32
581 - Specific topics in natural history
28
900 - History & geography
28
620 - Engineering & allied operations
27
304 - Factors affecting social behavior
26
340 - Law
16
576 - Genetics & evolution
16
658 - General management
15
300 - Social sciences
13
580 - Plants (Botany)
12
100 - Philosophy & psychology
10
720 - Architecture
8
800 - Literature & rhetoric
8
170 - Ethics
7
200 - Religion
6
336 - Public finance
6
410 - Linguistics
5
657 - Accounting
5
297 - Islam, Babism & Bahai Faith
4
301 - Sociology & anthropology
4
500 - Natural sciences & mathematics
4
361 - Social problems & social welfare in general
3
414 - Phonology & phonetics
3
540 - Chemistry & allied sciences
3
550 - Earth sciences
3
791 - Public performances
3
350 - Public administration & military science
2
400 - Language
2
520 - Astronomy & allied sciences
2
360 - Social problems & services; associations
1
650 - Management & auxiliary services
1